Freedom of association does not depend on showing that everyone, or even a majority, agrees with the aims of any association. Freedom of association is an absolute liberty of free people, subject only to the freedom of others not to associate with them. The solution for anyone who disagrees with the heritage preserved by a museum is simply to not visit the museum, and leave others at liberty to support the museum should they wish.
Freedom of association used to apply to everyone everywhere but, now, applies mostly to leftists. Lately, the non-communists have caught on to this and are applying it with a vengeance, especially on DIE practicing company’s and organizatons. Do you think that freedom of association by not buying or having anything to do with others is a sensible method of correcting mistakes?